JP7157487B2 - Placement device, placement machine and placement method - Google Patents

Description

Article 30, Paragraph 2 of the Patent Act applies. Mr. Eiichi Furuki, Executive Vice President of Daichi Co., Ltd., is located at 2222 Takesako, Koshi City, Kumamoto Prefecture, in the Equipment Center of Daichi Co., Ltd., where Mr. Kazunori Furuki and Mr. Eiichi Furuki invented AH270 (product name). The placing device of the invention of the present application) was disclosed to Mr. Suemitsu Fukushima.

TECHNICAL FIELD The present invention relates to a driving device, a driving machine and a driving method. More specifically, it is possible to drive steel sheet piles, H steel, etc. (hereinafter referred to as "placement objects") with sufficient impact force, and to suspend the placement device caused by resonance during work. The present invention relates to a placing device, a placing machine, and a placing method that can suppress damage to a construction machine such as a crane (hereinafter referred to as a "suspension machine").

Conventionally, especially in construction work in urban areas, the vibration and noise that occur during the work accompanying the driving of the object to be driven has been a problem. proposed a vibrating hammer (shown as a vibrating hammer 9 in FIG. 6(a)).

The vibratory hammer 9 has a motor 91 and a rotor 92 having a pair of left and right eccentric weights rotated by the motor 91 inside. The centrifugal force generated in the be.

Civil Engineering Lecture Passing Class 2 Civil Engineering Part 1 General Civil Engineering Chapter 3 Foundation Work Section 3 Ready-made Pile Foundation http://www.mizunotec.co.jp/doboku/doboku_kouza/doboku_kouza_14.html＞

By the way, as shown in FIG. 6B, the vibratory hammer 9 is often used by hanging it from a crane truck 93. Dampers that support booms, electronic parts of instruments, etc.) are frequently damaged.

In this accident, vibrations in the vertical direction caused by the structure of the vibratory hammer 9 (particularly large when starting or stopping) were transmitted to the crane truck 93 via hooks and wires, causing damage due to resonance occurring in the crane truck 93. An accident is believed to have occurred. For these reasons, even if a construction company applied to a rental company to rent a crane, there were cases where the rental was refused when it was found that the purpose of the crane was to suspend the vibratory hammer.

Many construction companies procured construction machinery such as crane trucks from rental companies, and vibratory hammers were useful equipment for suppressing noise and vibration during construction work in urban areas such as piling work. Therefore, it is a serious problem that the construction method combining the vibratory hammer 9 and the crane truck 93 cannot be implemented. On the other hand, since the vibrating hammer 9 drives the mounted object A while vibrating it instead of hitting it, it is not suitable for the work of driving the object A deeply into the ground.

The present invention has been devised in view of the above points, and is capable of driving an object to be driven with a sufficient impact force and suppressing damage to the suspension machine due to resonance during work. It is an object of the present invention to provide a placing device, a placing machine, and a placing method that can

In order to achieve the above object, the driving device of the present invention comprises a cylinder provided with an inserted portion at its tip, and a striking piston arranged in the cylinder and reciprocated in the axial direction of the cylinder by compressed air. The stroke of the striking piston in the reciprocating state is set to a length that allows striking only in the direction of the inserted portion, and the hammer portion is inserted into the inserted portion and struck by the striking piston. A movable joint portion that can advance and retreat in the axial direction of the hammer portion with a predetermined stroke; and a chuck portion capable of transmitting an impact force through the

Here, in the hammer portion of the present invention, since the striking piston reciprocates in the axial direction in the cylinder, the striking force can be transmitted to the inserted movable joint portion. The placing device of the present invention is provided with a movable joint portion and a chuck portion, and can place an object to be placed that is clamped by the chuck portion. That is, the driving device of the present invention can drive the object with the striking force from the hammer portion.

Furthermore, since the driving apparatus of the present invention has a structure for driving the object with the striking force from the hammer portion, for example, the vibratory hammer of the type that drives the object with vibration given to the object. It is possible to set with a stronger force than In other words, the hammer portion of the present invention can generate a sufficient striking force for performing the driving work.

By the way, as mentioned above, since the vibratory hammer is a structure that generates vibration in the vertical direction, the vibration caused by the operation of the vibratory hammer is transmitted to the suspension machine used during work, and the resonance caused by this vibration may damage the hanging machine.

On the other hand, according to the hammer portion of the present invention, the striking piston reciprocates with a stroke set to a length that allows striking only in the direction of the inserted portion. . With this structure, vibration caused by the operation of the placing device is hardly transmitted to the hanging machine used during work using the placing device, so that resonance is less likely to occur in the hanging machine. In other words, the hammer portion of the present invention can suppress damage to the hanging machine due to resonance during operation.

Furthermore, since the hammer part is a so-called air hammer type that uses compressed air, the impact speed can be easily adjusted by increasing or decreasing the pressure. Furthermore, since the power of the hammer portion is compressed air, it is possible to suppress the environmental load during the generation and discharge of the working fluid.

The movable joint part of the present invention can be struck by the striking piston and can move back and forth in the axial direction with a predetermined stroke, thereby transmitting the striking force from the hammer part to the attached chuck part. can be done.

Furthermore, the chuck portion is attached to the movable joint portion, so that the impact force transmitted from the hammer portion can be received via the movable joint portion. In addition, the chuck part can clamp the object to be placed, and can transmit the impact force to the object to be placed. can be cast.

Further, when the hammer portion has a detachable weight portion, the total weight of the hammer portion can be changed. As a result, for example, when it is necessary to drive the object to be driven deep into the ground, attaching the weight to the hammer increases the overall weight, and by adding a load, The impact force of the installation device can be improved.

On the other hand, when it is not necessary to drive the object deep into the ground, the weight portion may be removed from the hammer portion, and even in that case, the hammer portion's own weight alone can be used to perform the driving operation. Also, when the weight portion is not required to be attached, it can be removed from the hammer portion to reduce the overall weight of the hammer portion, thereby improving convenience during transportation and storage.

It should be noted that the weight part is not limited to attachment and detachment to the movable joint part or the chuck part (hereinafter referred to as "movable joint part or the like" in this paragraph) as well as the hammer part. However, since the movable joint portion and the like themselves move at high speed, attaching the weight portion further increases the stress applied to the movable joint portion and the like. As a result, there is a risk of fatigue failure of constituent materials such as the movable joint portion, and there is also a risk of increased vibration during work, which is not preferable.

In order to achieve the above object, the driving machine of the present invention includes a cylinder having an insertion portion at its tip, and a striking piston arranged in the cylinder and reciprocated in the axial direction of the cylinder by compressed air. The stroke of the striking piston in the reciprocating state is set to a length that allows striking only in the direction of the inserted and inserted portion. A movable joint that can advance and retreat in a predetermined stroke in the axial direction of the part, and a movable joint that is attached to the movable joint and can clamp the workpiece, and impacts the clamped workpiece through the movable joint. A driving device having a chuck part capable of transmitting force, and the driving device are suspended so that the chuck part faces the ground and the axial direction of the cylinder is vertical or substantially vertical to the ground. Equipped with a hanger that can be hung.

Here, in the driving device of the present invention, since the hammer portion has a structure in which the striking piston reciprocates in the axial direction within the cylinder, the striking force can be transmitted to the inserted movable joint portion. The placing device of the present invention is provided with a movable joint portion and a chuck portion, and can place an object to be placed that is clamped by the chuck portion. That is, the driving device of the present invention can drive the object with the striking force from the hammer portion.

Furthermore, since the driving apparatus of the present invention has a structure for driving the object with the striking force from the hammer portion, for example, the vibratory hammer of the type that drives the object with vibration given to the object. It is possible to set with a stronger force than In other words, the hammer portion of the present invention can generate a sufficient striking force for performing the driving work.

By the way, as mentioned above, since the vibratory hammer is a structure that generates vibration in the vertical direction, the vibration caused by the operation of the vibratory hammer is transmitted to the suspension machine used during work, and the resonance caused by this vibration may damage the hanging machine.

On the other hand, according to the hammer portion of the present invention, the striking piston reciprocates with a stroke set to a length that allows striking only in the direction of the inserted portion. . With this structure, vibration caused by the operation of the placing device is hardly transmitted to the hanging machine used during work using the placing device, so that resonance is less likely to occur in the hanging machine. In other words, the hammer portion of the present invention can suppress damage to the hanging machine due to resonance during operation.

Furthermore, since the hammer section is of a so-called air hammer type that uses compressed air for power, the impact speed can be easily adjusted by increasing or decreasing the pressure. Furthermore, since the power of the hammer portion is compressed air, it is possible to suppress the environmental load during the generation and discharge of the working fluid.

Further, in the driving device of the present invention, the movable joint portion is struck by the striking piston and can advance and retreat in the axial direction with a predetermined stroke, so that the striking force can be transmitted to the attached chuck portion. .

Furthermore, in the driving device of the present invention, since the chuck is attached to the movable joint, it is possible to receive the impact force transmitted from the hammer through the movable joint. In addition, the chuck part is capable of pinching the object to be placed, and by being able to apply impact to the object to be placed, the chuck portion can move the object to the place (mainly the ground) with the transmitted impact force. can be cast into

The hanging machine of the present invention can be hung so that the chuck part faces the ground and the axial direction of the cylinder is vertical or substantially vertical to the ground. It is possible to make it difficult for work obstacles to occur due to obliquely burying the installation object into the ground. Work obstacles include, for example, being unable to place the object to the desired position and depth, or bending the intermediate part during the placing work due to the fixing force of the soil and the impact force from the placing machine. is mentioned.

In order to achieve the above object, the driving method of the present invention includes a cylinder having an insertion portion at its tip, and a striking piston arranged in the cylinder and reciprocated in the axial direction of the cylinder by compressed air. The stroke of the striking piston in the reciprocating state is set to a length that allows striking only in the direction of the inserted and inserted portion. A movable joint that can advance and retreat in a predetermined stroke in the axial direction of the part, and a chuck that is attached to the movable joint and can transmit the impact force to the sandwiched workpiece through the movable joint. Using the placing device, set the chuck part and the clamped object to be placed toward the ground, and set the cylinder axial direction to be substantially vertical to the ground, or set the cylinder axial direction The first step is to set it so that it is perpendicular to the ground, and the compressed air supplied to the cylinder causes the striking piston to reciprocate in the axial direction. and a second step of driving into the ground.

Here, according to the first step of the placing method of the present invention, the hammer part of the placing device has a structure in which the striking piston reciprocates in the axial direction in the cylinder. It is possible to transmit the impact force to the part. The placing device of the present invention is provided with a movable joint portion and a chuck portion, and can place an object to be placed that is clamped by the chuck portion. That is, the placing device of the present invention can generate a sufficient striking force for carrying out the placing work, and can place the object to be placed with this striking force.

Furthermore, according to the first step described above, the axial direction of the cylinder is set to be substantially vertical with respect to the ground, or the axial direction of the cylinder is set to be perpendicular to the ground. By doing so, the axial direction of the cylinder can be vertical or substantially vertical to the ground, and the driving object can be vertical or substantially vertical to the ground. As a result, it is possible to make it difficult for the work obstacles due to oblique embedding into the ground of the object to be placed to occur.

According to the second step of the driving method of the present invention, the compressed air supplied into the cylinder causes the striking piston to reciprocate in the axial direction to generate a striking force, and the generated striking force is clamped by the chuck portion. It can be transmitted to the casting object. With this striking force, the object to be driven can be driven into the ground.

Furthermore, according to the driving method of the present invention, the structure is such that the object to be driven held by the chuck is driven by the impact force from the hammer. It is possible to drive with a stronger force than the vibratory hammer that hits the object. That is, the placing method of the present invention can generate a sufficient striking force for carrying out the placing work.

Furthermore, according to this driving method, the striking piston exerts a striking force only in the direction of the inserted part. Since almost no vibration caused by operation is transmitted, resonance in the suspension machine is less likely to occur. That is, in the placing method of the present invention, unlike the vibratory hammer, it is possible to suppress breakage of the suspension machine due to resonance during operation.

In addition, since this driving method is a so-called air hammer type in which the power of the hammer portion is compressed air, the striking speed can be easily adjusted by increasing or decreasing the pressure. Furthermore, since the power of the hammer portion is compressed air, it is possible to suppress the environmental load during the generation and discharge of the working fluid.

According to the placing apparatus, placing machine and placing method of the present invention, it is possible to place an object to be placed with a sufficient impact force and prevent damage to the suspension machine due to resonance during work. can be suppressed.

1 is an overall configuration diagram of a driving machine of the present invention; FIG. FIG. 2 is an explanatory view showing a driving device of the driving machine shown in FIG. 1; FIG. 3 is an exploded explanatory view showing the structure of the placing device shown in FIG. 2; FIG. 3 is a vertical cross-sectional explanatory view showing the structure from the intermediate portion to the tip portion of the placing device shown in FIG. 2 ; FIG. 3 is an exploded perspective explanatory view showing the structure from the intermediate portion to the tip portion of the placing device shown in FIG. 2; (a) is an explanatory diagram showing the prior art (vibratory hammer) described in Non-Patent Document 1, and (b) is an explanatory diagram of the state of use of the vibratory hammer shown in (a).

Embodiments of the present invention will be described in more detail with reference to FIGS. 1 to 5. FIG. In addition, the reference numerals in each figure of the drawings are attached within the scope of reducing complexity and facilitating understanding. .

A driving machine 1 shown in FIG. 1 includes a driving device 2 and a crane truck 3 (corresponding to the above-described “suspension machine”) for suspending the excavating device 2 . Each part is described in detail below.

(Placement device 2)
Please refer to FIGS. The driving device 2 includes a hammer portion 21, a weight portion 22 attached to the proximal end of the hammer portion 21, a movable joint portion 23 attached to the distal end of the hammer portion 21, a spacer portion 24 attached to the movable joint portion 23, and a chuck portion 25 attached to the spacer portion 24 .

The hammer part 21 is a so-called air hammer that is driven by compressed air supplied from a compressor (not shown) outside the machine. In the hammer portion 21, the reciprocating speed of the striking piston 211 increases (that is, the impact speed increases) when the pressure of the compressed air is increased, and the reciprocating speed of the impact piston 211 increases when the pressure of the compressed air is decreased. It has a structure that slows down (that is, the hitting speed is slow), and the hitting speed can be easily adjusted. In this embodiment, the configuration of the placing device is as described above, but the placing device in which the compressor is integrated with the hammer portion or other structural portion is not excluded.

The hammer part 21 has, inside a cylindrical cylinder 210, a striking piston 211 (see FIGS. 3 and 4) that reciprocates in the axial direction within the cylinder 210. In addition, although the reference numerals are omitted, , a check valve, an air distributor, a valve spring, a make-up ring, an O-ring, a piston retainer ring, a bit retainer ring, etc., and a known down-the-hole hammer driving mechanism (for example, JP-A-61-92288). description) is almost the same structure.

The operation of the hammer portion 21 will be briefly described. The compressed air that has flowed into the cylinder 210 first passes through the side of the striking piston 211 and turns to the tip side of the cylinder 210 (lower side in FIGS. 3 and 4), thereby moving the striking piston 211 to the proximal side of the cylinder 210 (upper side in FIGS. 3 and 4) (in this embodiment, it can also be said that “the striking piston 211 rises (or jumps up)”).

Next, along with the movement of the striking piston 211, the proximal end of the connecting shaft 231 (the upper end of the connecting shaft 231 in FIGS. 3 and 4) of the movable joint portion 23 (to be described later) and the tip of the striking piston 211 (the striking in FIGS. 3 and 4) The compressed air that pushed up the striking piston 211 flows into the striking piston 211 through this clearance. The compressed air that has flowed into the striking piston 211 flows in from the opening 235 at the proximal end of the connection shaft 231, enters the interior of the connection shaft 231 under the pressure, passes through the connection shaft 231, and travels from the hammer portion 21 side to the movable joint portion. It moves to the 23 side and is ejected.

As a result, the impact piston 211 moves (lowers or drops) toward the tip side of the cylinder 210 (lower side in FIG. 4). By repeating this operation, the striking piston 211 reciprocates, and the impact when the striking piston 211 moves (falls) toward the tip side applies a striking force to the movable joint portion 23, and the movable joint portion 23 is operated by this striking force. .

The hammer portion 21 is provided with a connecting joint 212 on the base end side (the upper side of the hammer portion 21 in FIGS. 2 and 3), and a movable joint 212 on the tip side (the lower side of the hammer portion 21 in FIGS. 2 and 3). A portion 23 is fitted.

The connection joint 212 has a hexagonal prism shape, and has a base portion fixed to the hammer portion 21 and an opening portion 213 formed at the tip portion. The connection joint 212 has a ventilable air passage 214 along its axis. One end of the air passage 214 is an opening 213 , and the other end opens into the cylinder 210 and communicates with the inside of the cylinder 210 . In the present embodiment, the connection joint 212 is connected to the weight portion 22, but the connection joint 212 is not limited to this. can also

The weight portion 22 is connected to the base end of the hammer portion 21 (in other words, the position on the opposite side of the movable joint portion 23 in the hammer portion 21; the upper part of the hammer portion 21 in FIGS. 1 and 2). The weight portion 22 includes a weight body 221 which is a columnar iron mass having a predetermined length and a ventilation path 222 formed along the axial direction. It has an insertable receiving hole 223 and a hexagonal columnar connecting joint 224 provided on the proximal end side of the weight body 221 . The ventilation path 222 is provided to allow ventilation from the proximal end of the connecting joint 224 to the receiving hole 223 .

In the present embodiment, the weight portion 22 has the structure described above, but it is not limited to this. A structure in which the weight can be adjusted by appropriately filling sand, liquid, or the like between the inner wall of the weight body and the outer wall of the ventilation pipe may be used. In the present embodiment, one weight portion 22 is provided, but the present invention is not limited to this. A mode in which a desired weight can be adjusted by connecting a plurality of weight portions may be used.

The movable joint portion 23 is attached to the tip of the hammer portion 21 so as to move back and forth in the axial direction with a predetermined stroke, and is struck by the striking piston 211 .

More specifically, the movable joint portion 23 is attached by inserting it from the tip side of the hammer portion 21, and includes a connection shaft 231 that receives the impact force from the impact piston 211 at its base end, and a flange provided at the tip of the connection shaft 231. It has a connecting plate 232 which is a circular disc. The connecting shaft 231 is attached so as not to come off from the hammer portion 21 side by the hammer bit retainer ring and the O-ring described above.

The connecting shaft 231 has a cylindrical shape with an outer diameter that allows it to be inserted into the cylinder 210 , and has a free end with an opening 235 formed at its proximal end, and its distal end is fixed to the connecting plate 232 . In addition, the connecting shaft 231 is formed with a plurality of spline shafts (reference numerals omitted) along the axial direction of the connecting shaft 231 in a region from the middle of the outer peripheral surface in the axial direction to the connecting plate 232 side. This spline shaft can prevent rotation in the circumferential direction and guide movement in the forward and backward directions when fitted into the cylinder 210 .

In addition, the movable joint portion 23 is formed with a ventilation path 234 (shown in FIG. 4) extending from the base end of the connection shaft 231 to the back surface of the connection plate 232. The ventilation path 234 extends in the direction of the spacer portion 24. A check valve (not shown) capable of preventing reverse flow of the compressed air flowing through is provided. The connecting plate 232 has a plurality of bolt insertion holes 233 penetrating from the front surface to the back surface in a region between the center and the outer peripheral edge.

The spacer portion 24 is attached between the movable joint portion 23 and the chuck portion 25, and has a structure that connects the movable joint portion 23 and the chuck portion 25 at a predetermined interval. According to the spacer portion 24, the impact force transmitted from the movable joint portion 23 can be reduced so that the chuck portion 25 is not damaged. Further, by using a second connection plate 243 having a different outer shape and a different arrangement of bolt insertion holes 246, which will be described later, it is possible to attach a chuck portion having a different shape.

More specifically, the spacer portion 24 includes a cylindrical body portion 241 and a flange-shaped disk provided on the base end side of the body portion 241 (upper side of the spacer portion 24 in FIGS. 1 to 4). A connection plate 242, a second connection plate 243, which is a flange-shaped rectangular plate provided on the tip side of the body portion 241 (under the spacer portion 24 in FIGS. 1 to 4), and the outer peripheral surface of the body portion 241. A plurality of radially protruding plate-like members having a plurality of reinforcing ribs 244 disposed between the first connecting plate 242 and the second connecting plate 243 .

A vent hole 245 is formed in a side wall of the barrel portion 241, so that the compressed air that has flowed into the barrel portion 241 from the hammer portion 21 via the movable joint portion 23 can be discharged to the outside.

The first connection plate 242 has an outer shape substantially the same size as the connection plate 232 of the movable joint portion 23, and has a ventilation hole 248 penetrating to the trunk portion substantially in the center thereof. In addition, the first connection plate 242 has a bolt insertion hole penetrating from the front surface to the back surface in a region between the ventilation hole 245 and the outer peripheral edge and at a position corresponding to the bolt insertion hole 233 provided in the movable joint portion 23 . 246 are formed.

Then, the movable joint portion 23 and the spacer portion 24 are connected by aligning the positions of the bolt insertion holes 233 and the bolt insertion holes 246 to communicate with each other, inserting the bolt B into each hole, and tightening with the nut N. can be done.

The second connection plate 243 is formed to have substantially the same outer shape as the connection plate 252 of the chuck portion 25, which will be described later. Further, the second connection plate 243 is formed with a bolt insertion hole 247 penetrating from the front surface to the back surface in a region between the center and the outer peripheral edge.

As shown in FIGS. 2 to 4, the reinforcing rib 244 has its upper end fixed to the lower surface of the first connection plate 242 and its lower end fixed to the upper surface of the second connection plate 242 . The reinforcing ribs 244 are provided at this position to reinforce the first connecting plate 242 or the second connecting plate 243 so as not to bend due to the load from the hammer portion 21 or the reaction force from the chuck portion 25. , the impact force received from the hammer portion 21 can be transmitted without loss.

In this embodiment, the movable joint portion 23 and the spacer portion 24 are separate members, but they may be integrally provided. However, since the connecting shaft is subject to wear and tear, the frequency of replacement is relatively high, whereas the frequency of replacement of other parts is lower than this. Therefore, it is preferable to have a structure in which the movable joint portion 23 and the spacer portion 24 can be separated.

The chuck part 25 is attached to the spacer part 24 and has a structure capable of clamping the driving target A and applying impact to the clamped driving target A. As shown in FIG.

More specifically, the chuck portion 25 includes a body portion 251, a connection plate 252 which is a flange-shaped rectangular plate provided on the base end side of the body portion 251 (upper side of the chuck portion 25 in FIGS. 2 to 4), It has a gripping claw portion 253 provided on the tip side of the body portion 251 (under the chuck portion 25 in FIGS. 2 to 4).

The connection plate 252 is formed to have substantially the same outer shape as the second connection plate 243 of the movable joint portion 23 . In addition, the connection plate 252 has a bolt insertion hole 254 penetrating from the front surface to the back surface in a region between the center and the outer peripheral edge thereof and at a position corresponding to the bolt insertion hole 247 provided in the movable joint portion 23 . It is The spacer portion 24 and the chuck portion 25 can be connected by aligning the positions of the bolt insertion holes 247 and the bolt insertion holes 254 and allowing them to communicate with each other, inserting the bolt B into each hole, and tightening them with the nut N. can.

The gripping claw portion 253 is of a hydraulic type and has opposing claws, and has a structure in which one claw (moving) advances and retreats with respect to the other claw (immovable) (there is one clamping portion). However, it is not limited to this embodiment, and may be, for example, a mechanical type or a pneumatic type. For example, there may be two of them.

(Crane truck 3)
Please refer to FIG. The crane truck 3 has a boom 31, a suspension shaft 32 provided at the tip of the boom 31, and a self-propelled vehicle body 33. The crane truck 3 has the placing device 2 facing downward. (that is, facing the ground) and the axial direction of the cylinder 210 of the hammer portion 21 is vertical or substantially vertical to the ground.

The suspending shaft 32 is adjusted in height by a wire (reference numerals omitted) drawn out from the boom 31 . A supply pipe 34 is connected to the hanging shaft 32 , and compressed air is supplied to the hammer portion 21 from an external compressor (compressed air supply source) via the supply pipe 34 .

In this embodiment, the mobile crane truck 3 is used as the crane, but the crane is not limited to this, and for example, a stationary crane may be used.

(Placement method)
A driving method using the driving machine 1 will be described.
(1) Move the driving machine 1 to the work place.
(2) Connect the crane truck 3 and the placing device 2 via the suspension shaft 32 .
(3) The chuck portion 25 clamps the object A to be placed.

(4) By lifting the placing device 2 with the crane truck 3, the placing target A and the chuck part 25 are directed toward the ground G, which is the place to be placed, and the cylinder 210 and the placing target are placed against the ground G. The axial direction of the object A is set to be substantially vertical, or the axial directions of the cylinder 210 and the object to be placed A are set to be perpendicular to the ground.

(5) Compressed air is supplied from a compressor (outside the machine). As a result, the impact piston 211 reciprocates (vertically moves) in the axial direction of the cylinder 210, and impact force is transmitted from above to the clamped object A to be placed. At this time, a pressing force in the direction of the ground is also added by the weight of the placing device 2 . In other words, the driving target A is driven into the ground G more stably by adding the weight of the driving device 2 to its own weight and further by adding the striking force of the driving device 2 .

As described above, according to the driving machine 1 and the driving method of the present embodiment, the driving object A can be driven with a sufficient striking force.

In addition, according to the driving machine 1 and the driving method, compared to the case of using a vibratory hammer type device, since the structure is less likely to cause resonance during work, the crane truck 3 due to resonance Damage can be suppressed, and a sufficient impact force greater than that of a vibratory hammer type device can be generated.

According to the driving machine 1 (the driving device 2) and the driving method, the generation of vibration and noise during work can be reduced even when compared with driving devices of the diesel hammer type and the hydraulic hammer type. can be done.

Furthermore, since the hammer part 21 is of an air hammer type, the impact speed can be easily adjusted by increasing or decreasing the pressure of the compressed air. In addition, since the power of the hammer portion 21 is compressed air, it is possible to suppress the environmental load during the generation and discharge of the working fluid.

Furthermore, since the weight portion 22 is provided, the impact force of the driving device 2 during operation can be improved. , the overall weight of the hammer portion 21 can be reduced, and convenience during transportation and storage is improved.

The terms and expressions used in the specification and claims are for the purpose of description only and are not limiting in nature. There is no intention to exclude some equivalent terms or expressions. Moreover, it goes without saying that various modifications are possible within the scope of the technical idea of the present invention. Also, the terms first, second, etc. do not imply a degree or importance, but are used to distinguish one element from another.

1 Placement Machine 2 Placement Device 21 Hammer Part 210 Cylinder 211 Impact Piston 212 Connection Joint 213 Opening 214 Ventilation Path 22 Weight Part 221 Weight Body 222 Ventilation Path 223 Receiving Hole 224 Connection Joint 23 Movable Joint Part 231 Connection Shaft 232 Connection Plate 233 bolt insertion hole 234 ventilation path 235 opening 24 spacer section 241 body section 242 first connection plate 243 second connection plate 244 reinforcing rib 245 ventilation hole 246 bolt insertion hole 247 bolt insertion hole 248 ventilation hole 25 chuck section 251 body section 252 Connection plate 253 Grasping claw 254 Bolt insertion hole 3 Crane 31 Boom 32 Hanging shaft 33 Car body 34 Supply pipe A Concrete object G Ground B Bolt N Nut 9 Vibro hammer 91 Motor 92 Rotor 93 Crane

Claims (3)

It has a cylinder with a fitted insertion portion at its tip, and a striking piston arranged in the cylinder and reciprocating in the axial direction of the cylinder by compressed air, and the stroke of the striking piston in the reciprocating state , a hammer portion having a length that allows striking only in the direction of the inserted portion;
a movable joint portion that is inserted into the inserted insertion portion, is struck by the striking piston, and can advance and retreat in the axial direction of the hammer portion with a predetermined stroke;
a spacer portion attached to the movable joint portion and having a structure having a tubular body portion having a predetermined length and extending in a direction opposite to the hammer portion;
A chuck attached to the spacer portion, capable of clamping an object to be driven, and capable of transmitting the impact force from the impact piston, which is transmitted through the movable joint portion and the spacer portion, to the clamped object to be driven. and
The movable joint section has a structure in which a ventilable air passage is formed from the base to the tip, and the tip of the air passage and the interior of the body of the spacer are in communication,
The spacer portion has a structure in which a ventilation hole is formed in the body portion so that the compressed air that has flowed in from the movable joint portion can be discharged.
Placement device. It includes a cylinder having a fitted insertion portion at its tip, and a striking piston arranged in the cylinder and reciprocated in the axial direction of the cylinder by compressed air, wherein the stroke of the striking piston in the reciprocating state A hammer portion having a length set to allow striking only in the direction of the inserted portion, is inserted into the inserted portion, is struck by the striking piston, and has a predetermined stroke in the axial direction of the hammer portion. a movable joint that can move forward and backward with the movable joint, a spacer that is attached to the movable joint and has a tubular body of a predetermined length that extends in the opposite direction to the hammer, and is attached to the spacer, a chuck part capable of holding an object to be driven and capable of transmitting the impact force from the striking piston transmitted through the movable joint part and the spacer part to the object to be driven; The joint portion has a structure in which a ventilation path is formed from the base to the tip, and the tip of the ventilation path communicates with the inside of the body of the spacer. A placing device having a structure in which a vent hole capable of discharging compressed air flowing in from the movable joint is formed in the part;
The driving device is provided with a hanging machine that can be hung so that the chuck part faces the ground and the axial direction of the cylinder is vertical or substantially vertical to the ground.
driving machine. It includes a cylinder having a fitted insertion portion at its tip, and a striking piston arranged in the cylinder and reciprocated in the axial direction of the cylinder by compressed air, wherein the stroke of the striking piston in the reciprocating state A hammer portion having a length set to allow striking only in the direction of the inserted portion, is inserted into the inserted portion, is struck by the striking piston, and has a predetermined stroke in the axial direction of the hammer portion. a movable joint that can move forward and backward with the movable joint, a spacer that is attached to the movable joint and has a tubular body of a predetermined length that extends in the opposite direction to the hammer, and is attached to the spacer, a chuck part capable of holding an object to be driven and capable of transmitting the impact force from the striking piston transmitted through the movable joint part and the spacer part to the object to be driven; The joint portion has a structure in which a ventilation path is formed from the base to the tip, and the tip of the ventilation path communicates with the inside of the body of the spacer. using a driving device having a structure in which a vent hole capable of discharging compressed air that has flowed in from the movable joint portion is formed in the portion, and directing the chuck portion and the clamped object to the ground, and a first step of setting the axial direction of the cylinder to be substantially vertical with respect to the ground, or setting the axial direction of the cylinder to be perpendicular to the ground;
and a second step of axially reciprocating the striking piston by the compressed air supplied into the cylinder, and driving the object into the ground by striking force generated by the reciprocating movement.
casting method.

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